A 60-GHz Wideband Circularly Polarized Aperture-Coupled Magneto-Electric Dipole Antenna Array


A unique circularly polarized (CP) aperture-coupled magneto-electrical (ME) dipole antenna is proposed. The CP ME-dipole antenna fed by a transverse slot etched on the broad wall of a section of shorted-finish substrate integrated waveguide (SIW) is convenient to integrate into substrates. An impedance bandwidth of wider than 28.eightp.c, a large 3-dB axial ratio (AR) bandwidth of twenty five.9percent, and gain of over the operating band are achieved. Additionally, since the CP radiation is generated by the mixture of two orthogonal ME-dipole modes, the antenna element has stable unidirectional radiation patterns that are nearly identical in two principle planes throughout the operating band, which is desirable to array applications. By employing the proposed CP ME-dipole as radiating components, an high-gain wideband planar antenna array is proposed for 60-GHz millimeter-wave applications. A fabrication procedure of using conductive adhesive films to bond all print circuit board (PCB) layers together is successfully implemented to comprehend the array design with a three-layered geometry, which has blessings of low prices and possibility of huge-scale manufacture. The measured impedance bandwidth of the fabricated prototype is 18.2percent for . As a result of of the wide AR bandwidth of the new antenna element, a wide AR bandwidth of 16.5p.c will be achieved by this array while not the employment of sequential feed. Gain up to twenty dBic and good radiation efficiency of around seventy% are also obtained thanks to the utilization of a full-corporate SIW feed network with low insertion loss at millimeter-wave frequencies.

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